The CSRB board is a 32-channel POTS and ADSL2+ combo service board with a built-in 600-ohm impedance splitter and protection circuit.
Narrowband services of the CSRB board
Board |
Reversal Polarity |
Working Mode |
Feed Current |
---|---|---|---|
CSRB |
All the 32 channels support the polarity reversal. |
The polarity reversal signals are transmitted after the phone is picked up, and the signal reversal is performed after the phone is hung up. |
25 mA |
The CSRB board provides the broadband and narrowband service processing functions to implement 32 channels of ADSL2+ and POTS services. The basic working principles of the CSRB board are as follows:
The broadband service processing includes the following:
The narrowband service processing includes the following:
The splitter module couples broadband and narrowband subscriber lines.
1.Trade terms: FOB,CIF,CFR,etc
2.Price Terms: L/C,D/P,T/T,Western Union,PAYPAL
3.Payment Terms: T/T in advance
4.MOQ: 1 pcs
5.FOB Price:US $1 - 1,000 / Piece
6.Port: Shanghai
7.Lead time: Within 5 working days after receipt payment.
8.Shipment: Express, Air, Sea
9.Supply capability: 200 Piece/Pieces per Week
10.Sample availability: Yes( not free)
11.Package information: carton package with Huawei original package
Shanghai KaiFei International Trade Co., Ltd. is a professional trading company which commits to import and export business.
We are now the agent of well-known international brands such as HUAWEI, ZTE, CISCO, ZYXEL, Grandstream, etc. Our customer include major national telecom carriers, as well as radio and television, electricity, mining and other industry professional network users; We have already established a long-term friendly and cooperative relations with them. In addition, the company has been actively expanding into foreign markets. The products are exported to Europe, America, Southeast Asia, the Middle East as well as Japan, Korea and other neighboring countries.
We will constantly improve our service and quality to create a win-win situation.
Please contact us to know details:
Attn:Yancy wu
Cell-phone:+86 18201728184
Skype:yancy.wu-1213